# File lib/rvg/rvg.rb, line 215
    def initialize(width=nil, height=nil)
        super
        @width, @height = width, height
        @content = Content.new
        @canvas = nil
        @background_fill = nil
        @background_fill_opacity = 1.0  # applies only if background_fill= is used
        @background_position = :scaled
        @background_pattern, @background_image, @desc, @title, @metadata = nil
        @x, @y = 0.0
        @nested = false
        yield(self) if block_given?
    end